Q. 34.3( 19 Votes )

Explain with example

Answer :

Macronutrients. An element such as potassium, nitrogen or calcium, essential in large quantities for plant growth is termed macronutrient. They are generally present in plant tissues in concentration of at least 10 mol Kg-1 of dry matter. Examples are Carbon, hydrogen, oxygen, nitrogen, phosphorous, potassium, calcium, magnesium, sulphur, silicon and iron. Micronutrients or trace elements, are needed in very small amounts (less than 10 mmol Kg-1 of dry matter). These include iron, manganese, copper, molybdenum, zinc, boron, chlorine and nickel. Beneficial nutrients. They are required by higher plants in large quantities. Examples are sodium, silicon, cobalt and selenium. Toxic element. Any mineral ion that reduces the dry weight of tissues by about 10% is called a toxic element. Example – excess of manganese causes the development of brown spots in plants. Essential elements. Such elements without which the physiological functions of plants are affected are called essential elements. These include calcium, hydrogen, oxygen etc.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

The arrangement oBiology - Exemplar

Some varieties ofBiology - Exemplar

Comment upon the Biology - Exemplar

Sunflower is not Biology - Exemplar

Trace the events Biology - Exemplar

Name the two impoBiology - Exemplar

Oxygen is criticaBiology - Exemplar

Lichen is usuallyBiology - Exemplar

What special anatBiology - Exemplar

A sample of urineBiology - Exemplar